Online trading community website

Looking for an end-to-end solution for an online trading community web site that provides elements of social networking, buyer/seller e-commerce functionality, shopping cart technology and upload/download storage functionality leveraging AWS. Some design templates provided already. This is a multi-phase effort that will likely continue over the next few months and include a need for the development of a simple iPhone/iPad/Android app. Phase 1, detailed here, is primarily about making sure the technology works and can scale. Who we are looking for: A person or a team who has proven record for delivering effective web applications with great usability in the front-end (we will provide necessary design templates) and solid implementation at the backend (business logic and database). What we need: (FULL DETAILS TO BE PROVIDED UNDER NDA TO SELECTED INDIVIDUAL/TEAM) A product that contains the functionality very similar to www.istockphoto.com. Some details incude: 1. Assist in the creation of a vibrant online community trading in high quality data files. 2. There will be two distinct user roles, that of a seller and a buyer. Although it is possible for users of the system to perform both roles, it is beneficial to view the two roles are separate. 3. Both roles will create an account on the site that will allow them to buy or sell data assets. A seller will then upload data assets to the site and set a purchase price for each item they wish to offer for sale and also assign tags to allow for the data assets to be searched for. A buyer will be able to search the site for data assets, preview them and then purchase them using a standard shopping basket metaphor. 4. It is important that the account created cater to both user roles, a buyer must be presented with information important to them such as credit balance, details of data assets previously purchased and possibly the ability to re-download previous purchases (up to a certain download limit). A seller will need to be presented with details of sales made, credits earned and the ability to turn those credits into real money along with details of items available for sale on the site and the ability to manage those items. 5. Items on the site will be traded using a credit system, where each credit has been assigned a pre-determined real world value. Buyers will purchase credits and then use these to purchase data assets. Sellers will accrue credits, which they then can convert back into cash. The site will take a percentage of each credit purchased. 6. To build the community feel of the site there must be an element of social networking features in the site including the ability to rate and review data assets for sale. We do realize that there are some pen points in these requirements. For those, you can use your own judgement for the best possible implementation (think of usability, simplicity and functionality). We’ll also be in touch regularly to make course corrections along the way. This product will be for English speaking customers. We’re asking you to design it for English, but make sure all the screen content is available in resource files to be later localized. Our interactions: As you make progress on the project, you’ll upload the latest version of the project to an internet connected server of your choice. We’ll browse your server to see the project and provide you feedback along the way. The formal review will happen at least twice a week. We’ll also be communicating over e-mail as needed. As we mentioned above, this is a multi-phase project and this is only Phase 1. if you’re interested, please send us links to your similar projects you’ve delivered before. If you don’t have any references/ratings, please develop a small working prototype for evaluation (Even if you have great ratings, a working prototype will be appreciated).